Suction-roll.



H. R. FARNSWORTH 6L T. H. SAVERY, 1R.I

SUCTION ROLL.

APPLlcATloN FILED 1uNE18. 1915.

lPtQnted Manin 2l, 19M.

www.

2 SHEETS-SHEET I.

WITNESS H. R. FARNSWORTH I T. H. SAVERY,1II.

SUCTION ROLL.

APPLICATION FILED IUNE I8, I9I5.

Patented Mar. 21, 1916.

2 SHEETSSHEET 2- WITNESS i #tain new and useful Improve Tus TTTTNToTTioT.

" rmsworn A ND THOMAS i1. sAvEnY, JR., or SANDUSKY, oHIo.

SUCTIONf-IROLL.

Lirama.l

zens of the United States ofAmerica, re-

siding in the city of Sandusky, county` of have invented cerments inSuction-Rolls, of which the following is a specif Erie, and State ofOhio,

fication.

This invention relates to improvements in suction rolls as used in themanufacture of paper, in which the outer surface of the "froll, iscovered with rubber; and the objects of our invention are, that-'will beeflicient in operation, inexpen- "'sive'4 to manufacture;

first, to provide a roll l v second,`ftol afford faclities for theproper extractionwof the wa- ;terffrom the paper pulp, and third,to'lessen 'the wear upon the ordinary;. ,Fourdrinierv wire or felt which isused lin paper making machines.

The invention, therefore, comprises asno-- tion roll that is co eredwith a suitable material for preventing the wear of the Fourdrinier wireor other material passing thereover.

Referring to the drawings:

a longitudinal sectional view Figure l is through the i Aaxis of theroll, showing the metal and rubber part of the roll in section, alsoillustrating the registering perforaticns through these two members ofthe, roll;" Fig. 2 is a transverse. sectional view oi'ifthe line 2-2 ofFig. l, showing the manner of attaching the rubber to the metal part ofthe roll, and Fig. 3 is an end view of Fig. l.

Referring to the drawings in detail: the metal part or shell of the rollis indicated -at 1 and the rubber covered part is indicated at 2. Thesetwo parts 0i' members of the roll are perforated, as shown at 3 and 4,the perforations 4 being slightly smaller than perforations 3. In orderto hold the rubber part 2 in place, clamping rings 5 are secured to thecylinder l by shrinking or specification Letters Patent. Patented Mar.21, 1916. atpucation iiiea June is, 1915. seriai No. 34,857.

otherwise. These rings are formed with a sharp edgey 6 in order torigidly 'A retain the rubber part in place. The metal part of thecylinder l has formed on its outer surface the projections 7', wherebywhen the rubber is molded on to the metal shell the tongues or ribs 8will enter the corresponding shaped grooves in the metal, thuspreventing any relative movement between the rubber and the metal. Theroll is designed to be used in the ordinary paper making machine overwhich the Fourdrinier wire or felt travels. This invention, therelfore,materially lessens the wear of the Fourdrinier wire whichg'is veryzexpensive to make and keep in."repair; f

What we clairnuisI y.511'. A suction'roll',t fe' metal shell ortion.of-j' y'hich is vcovered with rubber, registering perforationsfthrough.the rubber and the metal shell, means'l forfsecuring the rubber to the ishell, comprising projections spaced from each other and forming groovesin the peri'phery in the outer surface of the shell, whereby when therubber is molded tothe shell it will be secured in place.

2. A suction. roll comprising a shellland a covering therefor, thecovering andgshell having registering openings, means for.re.I

taining the covering against endwise mfovement and means comprisinginter-engaging grooves between the shell and covering,as described.

3. A suction roll comprising a shell and a rubber covering secured tothe outer surface of the same, means comprising inter- INLAND R.FARS\VORTH. THOMAS H. SAVERY, JR.

grip and 'y

